Remove the Tie Fighter / Admiral Ackbar operator

RemoveTieFighter.scala

// With Tie Fighter
(validNumberNel(keyJsOpt, _.toLongExact) |@| validNumberNel(valueJsOpt, _.toIntExact)) {
  case (key, value) => Measurement(name, key, value)
}

// Without Tie Fighter
type V[T] = ValidationNel[String, T]
Apply[V].apply2[Long, Int, Measurement](validNumberNel(keyJsOpt, _.toLongExact), validNumberNel(valueJsOpt, _.toIntExact)) {
  case (key, value) => Measurement(name, key, value)
}

// From ApplySyntax.scala#24:
// "Warning: each call to `|@|` leads to an allocation of wrapper object.
// For performance sensitive code, consider using [[scalaz.Apply]]`#applyN` directly.""